在相关的代谢细胞模型中涉及2型糖尿病效应基因,使用以促进者为重点的Capture-C
Nicholas A Wachowski1,2, James A Pippin1,2, Keith Boehm1,2
1Center for Spatial and Functional Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Diabetologia
|September 6, 2024
概括
这项研究通过整合多个测序数据集,确定了810个可能影响2型糖尿病风险的候选基因. 功能性实验证实了SMCO4基因表达与胰腺细胞中胰岛素分泌之间的联系.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 内分泌学 在内分泌学.
背景情况:
- 全基因组关联研究 (GWAS) 已经确定了许多2型糖尿病 (T2D) 风险位置,主要是在非编码区域.
- 鉴定由这些非编码变体调节的特定基因 (效应基因) 由于涉及复杂的细胞环境而具有挑战性.
研究的目的:
- 为了确定与T2D风险变异相关的效应基因.
- 描述T2D相关细胞类型中的染色体和基因表达特征.
- 为功能后续研究提供资源.
主要方法:
- 生成和整合以促进体为重点的Capture-C,测定转移酶可访问的染色质与测序 (ATAC-seq) 和RNA-seq数据.
- 对胰腺β细胞 (EndoC-BH1),肝细胞 (HepG2) 和脂肪细胞 (SGBS) 的分析.
- 变异对基因分析和分区链接不平衡得分回归.
主要成果:
- 在370个T2D风险位点涉及810个候选效应基因.
- 在胰腺β细胞中的促进剂调节元件中丰富的T2D和禁食葡萄糖GWAS位点.
- 在脂肪细胞中丰富的禁食胰岛素GWAS位点.
- 在胰腺β细胞中,在SMCO4基因被淘汰后,胰岛素分泌显著增加.
结论:
- 为T2D研究提供了可处理的细胞模型中组织特异性数据的宝贵资源.
- 促进研究相关细胞类型的非编码变异效应.
- 强调SMCO4作为T2D进一步调查的潜在目标.
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